Floor-planing machine.



H. L. YOUNG.

FLOOR PLANING MACHINE.

APPLICATION men MAR. 18. 1914.

Patented Apr. 27, 1915.

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THE NORRIS PETERS 60., PMOTO-LITHQ. WASHINGTON, D, C,

H]. L. YOUNG.

FLOOR PLANING MACHINE.

APPLICATION man MAR. 18. 1914.

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APPLICATION FILED MAR. 13' I914.

Patented Apr. 27, 1915.

7 SHEETSSHEET 5.

LEJUQ Q II HARVEY L. YO NG.

THE NORRIS PETERS CO., PHOTO-LlTF IO" WASHINGION, D, Q

H. L. YOUNG.

FLOOR PLANING MACHINE. APPLICATION FILED MAR. 28. 1914.

E, 1 3? U5 Patentefl Apr. 27, 1915' SHEETS-SHEET 6.

PHOTO-LI THQ, WASHING TON um/whom HARVEY L. YOUNG.

H. L. YOUNG.

FLOOR PLANING MACHINE.

APPLICATION FILED MAR.18. WM.

1 1 9 l5 Patented Apr. 27, 1915.

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FLOOR-PLANING MACHTNE.

memos.

Specification of Letters Patent.

Patented Apr. 27, 1915 Application medium-1118,1914. Serial No. 825,480.

To all whom it may concern: 7

Be it known that I, HARVEY L. YOUNG, a citizen of the United States, residing at Dayton, inthe county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Floor-Planing Machines; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in floor planing machines. Machines of thistype are used for finishing, or bringing to a smooth surface, hardwoo floors which are subsequently waxed or varnished.

The object of the present invention is to provide a machine of the above type with a reciprocating woodfinishing tool and is especially adapted to work in corners and other restricted places.

Referring to the accompanying drawings, Figure 1 is a front elevation of my improved floor-planing machine; Fig. 2 is a top plan view partially in section; Fig. 3 is a section approximately on the lines '33 of Figs. 1 and 2; Fig. 1 is a section on the lines ir-4: of Figs. 2 and 3-, Fig. 5 is a detail view of the ratchet drive mechanism the same being a section approximately on the line 5 5. of Fig. 2; Fig. 6 is a detail view of the clutchcontrolling leverthe same being a section approximately on the line 6-6 of Fig. 2. Figs. 7 and S are detail views of the movable member of the clutch; Fig. 9 is a section on the line 9-9 of Fig. 7; Fig. 10 is a detailview partially in section of the train of gears between the motor and the main drive shaft; Fig. 11 is a section on the line 11-11 of Fig. 2 the same being a detail of the drive controlling means; Fig. 12 is a section on the line 12-12 of Fig. 11; Fig. 13 is a top plan view of the drive-controlling means; Fig. 1a is a section on the line 14L-1& of Fig. 11; Fig. 15 is a section on the line 15-45 of Fig. 11; Figs. 16, 17 and 18 are detail perspective views of portions of the drive-selecting means; Fig. 19 is a section on the line 19-19 of Fig. 1; Fig. 20 is a detail view of the lever for controlling the scraper-blade; Fi 21 is a section approximately on the linz 21-21 of Fig. 1; Fig. 22 is a section on machine, either direct or the scraping and the line 22-22 of Fig. 1; Fig. 23 is adetail view of the eccentric for ratchet drive; Fig. 24c is a detail view of the lever for selecting the method of driving the ratchet; Fig.25 is a detail View Fig. 26 is a detail view of the sand-papering attachment; Fig. 27 is an elevation of the planing attachment; and Fig. 28 is a section on the line 28-28 of Fig. 27.

. Throughout the specification and drawings, similar reference characters indicate corresponding parts.

Frame-work, (Figs. 1, 2, 3 and 4E.)-The frame-work of the machine consists of a base plate 30 which is provided with bearings 31 on its under side and at its rear edge. naled in the bearings 31 is an axle 32 provided with wheels or tractors 33. Extending from the forward edge of thebase plate 30 are brackets 34 in which are pivoted frames 35 in which caster rollers 36 are journaled. The means for driving the tractors 33 and the means for steering the caster rollers will be hereinafter described. Mounted along the front edge of the base plate 30 is a frame 37 which supports the driving means for the scraper-blade or surfacing tool which will be hereinafter described. Mounted on standards 38, which extend vertically from the rear edge of the base plate 30, and supported at its front end by the frame 37, is a deck or platform 39 upon which the driving motor iO is mounted. The motor 40 is preferably of the electrical type and the connections between the motor an driving mechanism of the machine will be hereinafter described.

Floor swfacing mechanism, (Figs. 1, 2 and 3.)Mounted on and forming part of the frame 37 is a bearing 41 which receives the hub 4:2 of a crank plate 13 driven from the motor by means hereinafter described. The said crank plate 13 is provided with a T-slot 1a which receives an adjustable crank pin 45 to which is attached the lower end of an adjustable pitman 16, the upper end of said pitman being attached at i7 to one end of a bell-crank lever 48. The bellcrank lever 4.8 is pivoted at to'the upper end of the frame 37, and the lower end of said bell-crank lever is connected by a pin 51 to a link 52 which is in turn connected to a sliding member 53 by a pivot 54. The sliding member 53 is provided with guides 55 which slide on rails 56mounted on a vertically actuating the i of the steering mechanism;

Jour-.

. to's'aid crank by ond ends of cranks 59 which extend 60 are means of pivots 61, to brackets 62 which extend from the frame37. The said hubs 60 are provided with cranks 63 and 64-which are'connected by a rod65'thereby permitting the cranks 59 to oscillate in unison and the frame 57 'to' maintain atrue horizontal position when reciprocating vertically. The frame 57 is reciprocated as follows: (See also in this connection Figs. 21 and 22). Pivotally connected by means of a bolt 66, to the crank 64, member 67 which through a slot 69 rolle r'72 is adapted toengage a cam 73 on the periphery of the crank plate 43. The

said swinging member 70 is provided with a pin 49 adapted to fit in an opening in the swinging member 67, thereby connecting the roller 72 with the'crank 64. he pin 49 is provided with afinger pin 89 which extends out of the member 70 of thecam 73 WVhen the roller 72 is placed out of the path of the cam 43, the frame 57 WVlll not be reciprocated vertically during the horizontal reciprocation of the member 53 which is the operation when the machine is used for sandpapering, as will be more fully described. As will be seen, the frame 5' is moved vertically by the cam 73, While the sliding member 53 s reciprocated horlor" a pin 78, a clamping member 79. The clamping member 79'co6perates with a secclamping -member 80 to clamp the scraping blade 81. The said clamping member 80 abuts against a projection 82 extending from the plate 76 and is pressed against. the scraping blade to clamp the same by a thumb-screw 83. The position of the clamp formed by these 80 and the angle of the scraping-blade 81 may be' adjusted by a pin 84 which engages an arm 85 of the clamping member 79 and enters openings 86 in a projection 87 extending from the plate 77. The pivot 78 pertob pivotally connected, by

members 79 and.

mits the vertical angle of the scraping-blade ing the scraper-blade inoperative, by a lever 90. (See also in this connection Figs. 19 & 20). The lever 90 is pivoted at 91 to the extreme upper end of the frame 37, and is provided witha crank 92 to which is secured, at 93, a connecting rod portion 94. he said connecting rod portion 94 is provided with a slot 95 pocket 96 which receives the upper end of a connecting rod portion 97. The said portion 97 is provided with a pin 98 which lies in the slot 95, thereby allowing relative movement between the rod portions 94 and 97. The lower end of the portion 97 is provided with a cylinder 99 which receives a plunger portion 100. This plunger portion 100 is connected to a crank 101 extending from one of the hubs 60 and is partially controlled by a spring 102 within the cylinder 99 the tension of which may be adjusted by a set screw 103.

The frame 57 may be elevated to place the roller 72 out of the path of the cam 73 by moving the lever 90 to the right, as seen from Fig. 1, in which case the pin 98 engages the top of the slot 95 and a head 104 on the upper end of the plunger 100 is engaged by the lower end of the cylinder 99, he frame 57 is maintained in this position by a plunger 106 mounted on the lever 90 which enters a recess 107 in a segment 108 mounted on the upper end of the frame 37. The plunger 106 is connected to a lever 109 which is in a position convenient to be grasped by the fingers when the hand grasps the lever 90. The plunger is provided with a spring 110 adapted to maintain said plunger in the recess 107. segment 108 is also provided 95. also provided with ratchet teeth 112 which are used in connection with a sand-papering attachment shown in Fig. 26. lVhen the scraper-blade 81 is used, the said blade is in contact with the floor during the scraping stroke but is elevated by the cam 3 during the return stroke. lVhen the sand-papering attachment is used, the frame is maintained in a depressed position, during both strokes of the member 53 by extracting the pin 49 from the opening 74 which allows the roller 72 to be swung out of the path of the cam 73. The sand-papering attachment, as shown in Fig. 26, consists of a block 113 provided with a clamp 114- by means of which the sandpaper 115 is sement 108 cured to said block. The upper side. of the block 113 is provided with lugs 116 which receive a pin 117 to which a plate 118 is pivotally attached. The plate 118 is adapted to be received by the clamping members 79 and the same as the scraping-blade 81. The pivoted swivel connection between the plate 118 and the block 113 permits the block to adjust itself to inequalities in the floor. The pressure of the block 113 against the floor is secured by the spring 102 and said pressure may be regulated by the lever 90 the ratchet teeth 112 being provided for this purpose. blade is shown in Fig. 1," no means is provided to regulate the depth of the cut. To regulate the depth of penetration of the blade and toguide the blade over rough surfaces, a plane or guiding member is provided. (See in this connection Figs. 27 and 28.) The frame of the plane consists of a base 120 having an opening 121 and a central flange 122 which extends upwardly at an angle. tached to the flange 122 by meansof thumbscrews 124 and the cutting edge of said blade may be adjusted to extend a definite distance through the opening 121 and beyond the under surface of the plane which comes in contact with the floor. Extending from the side of the flange 122 opposite the scraping blade 123 is a screw 125 having a head 126 and by means of which the angle of the blade 123 with the flange may be adjusted. The screw 125 is also adapted to finely adjust the eXtent of penetration of the cutting edge after said blade has been clamped in position by the screws 124. Mounted on the screw 125 is a plate 127 adapted to be received by the clamping members 79 and 80 in place of the scraping blade 81, shown'in Fig. 1. The under surface of the plane is adapted to engage the high surfaces of the floor, thereby regulating the extent of penetration of the scraping blade. When the plane is used, the frame 57 is elevated and lowered during the reciprocation of the frame, the same as the blade 81 shown in Fig. 1. a

Scraping-blade driving means, (Figs. 1, 2, 3 and 10.)Connected to the hub 42 of the crank plate 43 is a shaft 130 which is journaled in bearings 131 in a housing 132 extending from the upper side of the base plate 30. Mounted on the shaft 130 is a worm gear 133 in mesh with a worm 134 on a sleeve 135 journaled in bearings 136 in the housing 132. Mounted on one end of the sleeve 135 is an outer friction-clutch member 137 which cotiperates with aninner friction clutch member 138 splined to a shaft 139 by 3 means of a double armed member 140 attached to the shaft by means of a in 148. (See also Fig. 8 in this connection The friction clutch is mounted in a housing 186 In the form the scraping- The scraping-blade 123 is at and the means for actuating said clutch will be hereinafter described. The end of the shaft 139 opposite the clutch is connected to the motor 40'by a train of reduction gearing mounted in a housing 128 and consisting of gears 141 to 147, see Fig. 10. The gears 143 and 144 may be removably mounted in any well known manner to permit others of different dimensions to be substituted thereby .changing' the ratio of speed between the motor and theshaft 139. The friction clutch above referred to is actuated or controlled as follows. The inner clutch member 138 is normally held in engagement with the outer clutch member 137 by a spring 149 which lies within a hub 150 of the inner clutch member. The spring 149 exerts its expanding influence between an internal flange 151 so I an anti-friction bearing 158. The cup 159 straddles the yoke 152 and is attached to the hub of the inner clutch member 138 by means of screws 160. (See also Figs. 7 and 9 in this connection). The free end of the lever 153 is adapted to be engaged by the foot of the operator, and to hold the lever in a lowered position with the cilutchmem bers disengaged, a spring-controlled ratchet 161 is provided. (See also Fig. 6 in this connection). The ratchet 161 is pivoted to the lever 153 and is adapted to engage the edge of the base plate 30. The ratchetis provided with a projection 162 adapted to be engaged by the foot to force the ratchet teeth in engagement with the base plate 30. The spring 149 which exerts an upward influence on the free end of the lever 153 will hold the ratchet in engagement with the edge of the base plate, but when the free end of said lever is slightly depressed and the projection 162 is released, a spring 163 will release the ratchet from engagement with the edge of the base plate.

Means for dancing the machine at high speed, (See Figs. 2, 3 and 4.)The shaft 32,

onwhich the tractors 33 are mounted, is

10. and: 1188 are insengagementwith opposite lever S-piizoted gat-17 9 to the under side-of thezbase plate30. The l'ever178 is provided with. a"; bifurcated end 181. adapted to be en gaged-bya lugl82 extending from a rocki-rshaft1183. :The shaft 183 is provided With afihandlex-18 and; is journaled in bearings 185: on the hon'sing'1'86 of thefrictionclutc'h before referred to. Also freely mounted on theshaft 17 1am bevel gears 187 and: 188 mesh with a bevel gear-189: The gears187 side's-of the gear 189 and said gears 187 and 188 andare, therefore, rotated (in opposite directions. ,The' saidgears 187" and 188 are zprovided Withclutch'meinbers 190 and 191- adapted to be engagedby a clutch member;

.Mounted. onathe upper end of thes'aid' shaft and are adapted to intermittently and indi- .or.188. 'TMELIm/S. for driving. the machine at slow 198 isa bevel gear200 in mesh with a bevel through which the shaft 174: is driven from the motor 10. The gear 133 always rotates in one direction, and it-will be seen that the tractors 33 may be rotated in opposite directions byplacingthe clutch member 192 in engagement; with either of the gears. 187

speiecl, (liigs. 2, 41,5, 11, 15 and-23.)1t is contemplated that when the machine is being driven at: high speed, it is being moved to a position on the floor to performits work and, when driven at'low speed,jis performing its work. ,Theratchet 175 is adapted to be engaged by paw-ls 205 and 206 mounted in an oscillating housing 207 extending from a hub 208-.journaled on the clutch member 176 of the ratchet 175. The paw-ls 205 and 206' are partially controlled by springs 209 vidually rotate the ratchetand consequently the tractors 33 in opposite directions. The

hub208 is provided with a casing 210 which incloses the ratchet and with an arm 211 to which is pivotally attached the lower end of a connecting rod 212. The upper end of the? connecting rod 212" is 'adjustably con- 3 nected'by aicrank. pin213'to a slotted crank 214: extending from a hub 215 pivoted by means of a pin 216 to a standard 217 which extends from the base 30. Also extending from the -hub:215 is a crank 218 to the outer end of which is connected, by means of a pin 2l9,.the:upper end of av connecting rod gear 201 attached tothe wormgear 133 and 220. Therod. 220 extends from an ec'centric'strap-221 which surrounds an eccentric 222 freely mounted on the shaft 174. The eccentric 222 is-provided with clutch member 223 adapted to be engaged by the clutch member- 177. Vhen the clutch member 177 is in. engagement with the clutch member 223 on the eccentric, the ratchet 175 and the sprocket 172 carried thereby will not be 222 or the clutch member 176 of the ratchet 175, the clutch member 177 being shifted by the lever 178. The direction in which the machine is driven is selected by pressing, by the foot, one or the other of the pins 196 and 197. When operating on high speed, the clutch member 192 is shifted by the pins 196 and 197 as follows: The pins 196 and 197, as particularly shown in Fig. 11, are adapted to engage the ends of a lever 225 pivoted at 226 to brackets 227 extending from the lower side of thebase plate 30. The lever 225 is provided with a projection 228 adapted to be received by a pocket 229 in the shiftable end or head 230 of the member 195. When the projection 228 lies within thepocket 229 and one or the other of the pins 196 or 197 is depressed, the member 195, the rod 194, the yoke 193 and the clutch member 192 will be shifted. The means whereby the pins 196 and 197 select the-pawls 205 or 206 is as follows: The projection 228 is adapted to be received by a pocket 224 in a shiftable bar 231. The bar 231 is also provided with a pocket 232 adapted to receive the lower end of a lever 233. The position of the parts is such that the projection 228 is adapted to lie within the pocket 22 1 at the same'time that the pocket 232 receives the end of the lever 233. The lever 233 is pivoted at 234 to the base 30 and is provided with upper and lower projections 235, having rollers 236. The rollers 236 are adapted to engage individual segments237 which form the ends of bell-crank levers 238 pivoted at 256 to the projection 239 extending from the housing 207 which contains the pawls Y205 and 206. The segments-237 oscillate with the housing 207 and are always in a position to be engaged by their respective rollers 236. The end of the levers 238 opposite the segments 237 are adapted to engage the pawls 205 and 206 to place them out of engagement with the ratchet 175. When either of the pins 197 or 196 is depressed, one of the rollers 236 will engageone of the segments 237 to move its respective pawl 205 or 206 away from the ratchet 175, while the other roller 236 will move away from its segment 237 and will permit its respective spring 209 to move its respective pawl 205 or 206 in engagement with the ratchet 175. The engaging ends of the pawls 205 and 206 are beveled and point in opposite directions, the pawls will therefore drive the ratchet 1-7 5 in opposite directions during the reciprocation of the housing 207. The connection betweenthe bell-crank levers 238 and the pawls 205 and 206 consists of recesses 240 which receive the ends of the levers, and which are of a length sufficient to permit the pawl to move independently of the levers when the pawls are in engagement with the ratchet. When neither of the pins 197 or 196 is depressed, as is shown in Fig. 11, the rollers 236 will hold both of thepawls out of engagement with the ratchet 175. In Fig. 5,however, the pawl 206 is shown in operative relation with the ratchet. It will 'be noted that,

when the projection 228 is in operative relation with the head 230, the pins196' and 197 are adapted to select the direction of drive at high speed, and when said projection 228 is in operative relation "with the bar 231, the said pins select the direction of drive at low speed. The means for shifting the head 230 and bar 231 into engagement consists of the following: The said head and bar are slidingly mounted in a laterally and reciprocatingly movablehousing 241 which slides in a guide 242 depending from the under side of the base plate 30. The housing 241 is shifted through the agency of the member 195 which, it will be remembered, is pivoted at 168. The member 195 is provided with a projection 243 having a slot 244 which receives a crank-pin 245 on the end of the shaft 183. It will be remembered, that the shaft 183 shifts the clutch member 177 to select the method of drive, and, it will now be seen that the same shaft, to-wit, 183, also simultaneously places the means for selecting the direction of drive in connection with the controlling means of the high and low speed driving means. The housing 241 is provided with guide points 246 which permit the head 230 to oscillate slightlv in the housing when said housing is reciprocated. The head'230 and the bar 231 are provided with cam projections 247 which guide the projections 228 and 233 into the pockets 229, 224 and 232 when the housing is reciprocated. When the projection 228 lies within the pocket 229, the end of the lever 233 lies within a centrally located recess264 which holds the lever in the position shown in Fig. 11. When in this position, the bell-crank levers are holding both 'withthe ratchet 175. The pawls casters 36, therefore, move in unison.

of the pawls 205 and 206 out of engagement are, therefore, out of engagement with the ratchet 175 when the machine is being driven at high speed. The lever 225 is provided with a segment 248 having three recesses 249 which correspond to the reverse, neutral and forward position of the pins 196 and 197. The recesses 249 are adapted to receive a plunger 250 mounted in a pocket 251 and controlled by a spring 252. The plunger 250 is adapted to hold the lever 225 in any of its set positions."

. When the machine is driven at low speed,

through the eccentric 222, the shaft-174 may rotate in either direction as the direction of drive at low speed is selected by setting eitherone of the pawls 205 or 206. However, for convenience, the shaft 174 is clutched to the gear 188 when operating at low speed by the following: Mounted on the under side of the member 195 is a lug .253 which receives an adjusting screw 254 adapted to be engaged by the end of a projection'255 of the lever 178 which shifts the:-

clutch member 177. The position of the lug 253 is such that the clutch member 192 will be shifted into engagement with the clutch member 191 of the gear 188, when the lever 184 is rocked to place the clutch member177 in engagement with the clutch member 223 of the eccentric 222.

Steering mechanism, (Figs. 1 and 25.)

The frames 35 which carry the caster rollers 36 are provided with projections 257 upon the base 30 of the machine with his feet in a position to engage the lever 153and the pins 196 and 197 and his hands in a position to engage the levers 90, 184 and 263 see Figs.

'2 and 6. The operator is also in a position to control the motor by means of any well known form of controller (not shown When it is desired to move the machine to a position to begin the operation, the operator rocks the lever 184 to place the clutch -member 177 in engagement with the clutch member 176, thereby securing a high speed drive; When theflever 184 was shifted, the

projection 228 of the lever 225 received the pocket 229 of the member 195, see Fig. 14.

One

The operator then presses onone or the other of the pins 196 or 197 depending upon the direction he wishes to travel, see Fig, 2. This operation shifts the clutch member 192 inoperative relation witheither: of the clutch members 190 and 191 see Fig. 4. .He then .sets' the friction clutch "having previously started the motor, meanwhile guiding or shifted, the housing 241 is likewise shifted to place vtheprojection 228in engagement withthe bar 231 thus permitting the operator to select the direction of travel at low speed by pressing onone or the other of the pins 196 or 197 which places one or the other of the pawls205 or 206 in operative relation with the ratchet 175. g The operator then places the scraping blade in operative relation with the floor by shifting the lever j 90 and placing the roller 72 in the-path of i so the cam 7 3. The machine is then placed in operation by setting the friction clutch. 'When' the operator reaches a point where he desires to discontinue the scraping operation and move to another pcsitionat high speed, he unsets the friction clutch and elevates the scraping blade with theroller 72 out of the pathof the cam 7 3 by shifting the lever 90. Tosecure a high speed drive he rocks the lever 184 toplace the clutch-member 17 7 in i V engagement with the clutch member 17 6.

When this operation takes place the projection 228 is placed in engagement with the ,head 230 of the member 195 thus permitting the direction of drive to be selected by "pressing-oneor the other of the pins 196 or 197 When either of theseipins is depressed, the clutch member 192 will be placed in engagement with either of the clutch members .l90 orl 191. The machine is then started by throwing in the frictionclutch.

"Havingidescribedmy invention, I claim- I '1. In a floor-surfacing machine, a main frame, a movable frame mounted on said I main frame, a floor finishing' member mounted on said movable frame, a crank adapted "to horizontally'reciprocate said member, and a camadapted to vertically reciprocate said movable frame. 7. 7

' '2. In a floor-surfacing machine, a main frame,a movable "frame mounted on said main frame, a floor-finishing member mounted on said movable frame, a crank adapted to horizontally reciprocatesaid member, a

cam adapted to vertically reciprocate said movable frame, and means for disengaging said movable frame from said cam.

'3. In a floor-surfacing machineya' main frame, levers mounted on said frame, a 'movable frame mounted on said levers, a reciped to said last named lever and adapted to horizontally reciprocate said reciprocating member, and a cam connected to said first named levers and adapted to vertically reciprocate said movable frame.

4. In a floor-surfacing machine, a main frame, levers mounted on said frame, a movable frame mounted on said levers, a cam connected to said levers and adapted to vertically reciprocate said movable frame, means for disconnecting said cam from said levers, a reciprocating floor-finishing member mounted on said movable frame, a lever connected to said reciprocating member, and a crank connected to said last named lever.

5. In a floor-surfacing machine, a main frame, levers mounted on said frame, a movable frame mounted on said levers, a second qlever connected to said first levers, a roller mounted on said second lever, a cam engaged by said rollerg'means for rocking said levers to place said roller out of the path of said cam, a reciprocating floor-finishing member mounted on said movable frame, a third lever connected to said reciprocating member, and a crank connected to said third lever.

6. In a floor-surfacing machine, a main frame, levers mounted on said main frame, a movable frame mounted on said levers, a second lever connected to said first levers, a roller mounted on said second lever, a cam engaged by said roller, a third lever connected .to said first levers and adapted to place said roller out" of the path of said cam, a reciprocating floor-finishing member mounted on said movable frame, a fourth lever connected to said reciprocating member and a crank plate on which said cam is mountedconnectedto said fourth lever.

7. In a floor-surfacing machine, amain frame, levers mounted'o n said main frame,

. a movable frame mounted on said levers, a

second lever connected to said first levers, a roller mounted on said second leverpa cam engaged by said roller, a third lever resiliently' connected to said first levers and adapted to place said roller out of the path of said cam, a reciprocating floor-finishing member mounted on said movable frame, a fourth lever connected to said reciprocating member, and a crank plate on which said cam is mounted connected to said fourth lever.

8. In a floor-surfacing machine, a main frame, a vertically movable frame mounted on said main frame, a cam adapted to vertically reciprocate said movable frame, means permitt ng sald cam to be disconnected from said movable frame, a reciprocating floorfinishing member mounted on said movable, frame, means for reciprocating said member, and resilient means controlling said movable frame when disconnected from said cam.

9. In a floor-surfacing machine, a main frame, a vertically movable frame mounted on said main frame, a cam adapted to vertically reciprocate said movable frame, means permitting said cam to be disconnected from said movable frame, a reciprocating floor finishing member mounted on said movable frame, means for reciprocating said member, and adjustable resilient means controlling said movable frame when disconnected from said cam.

10.'In a floor-surfacing machine, a main frame, a vertically movable frame mounted on said main frame, a cam adapted to vertically reciprocate said movable frame, means permitting said cam to be disconnected from said movable frame, a reciprocating floor-finishing member mounted on said movable frame, means for reciprocating said means for imparting such movement to said last named frame including a cam, a horizontally reciprocable member carried by said vertically movable frame, a floor-surfacing blade carried by said horizontally reciprocable member, and means for imparting such movement to said horizontally reciprocable member including a crank, substantially as specified.

In testimony whereof I affix my signature, in presence of two witnesses.

HARVEY L. YOUNG. Witnesses:

R; J. MCCARTY,

MATTHEW SIEBLER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Batents, Washington, D. G. 

